Time to think about replacing the image drum unit. Excess toner is not being cleaned off properly and is winding up on your printed pages. The drum unit is separate from the toner cartridge, and you normally replace the toner cartridges several times before needing a drum. Replacements are available from many online sources and at office supply stores. Generic replacements run around $50 and the original part is around $100.

Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.

If this just started after you replaced the toner cartridge, one would have to say that it is a bad toner cartridge.Print something that smudges. Pull down the front cover and look at the cartridges. Pay attention to the top one(black).Look at the drum on that cartridge. You should see the toner sitting there. Compare it to the other cartridges which should be clean.

The problem could be caused by the photoconductor units. Try to swap the affected photoconductor units (like swap the magenta with black and cyan with yellow). If problem still occurs, then the photoconductors need replacement. I suggest you contact Lexmark Technical Support for assistance. Thanks

Very nice trouble shooting. The image defect you describe point to the OPC or drum unit this is essentially the toner cart. In your case black. Measureing the distance between repetitive defects is a sure way of diagnosing problems such as yours. Again nice work.

I don't have this but I try to solve your problem :
In the printer and fax, right click on your device name, choose maintenance and run Cleaning, Deep Cleaning, Roller Cleaning and Bottom Plate Cleaning.

Normal
0
Driver could be corrupt.Disconnect the printer or at least be sure it is turned off.
I'd do both and reinstall the CD software program that came with
the printer. When the software program asks you to connect the
printer to the USB port, do so and it should again work properly.
Hope this helps. Bud